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JPS57118897A - Hydraulic press - Google Patents

Hydraulic press

Info

Publication number
JPS57118897A
JPS57118897A JP316081A JP316081A JPS57118897A JP S57118897 A JPS57118897 A JP S57118897A JP 316081 A JP316081 A JP 316081A JP 316081 A JP316081 A JP 316081A JP S57118897 A JPS57118897 A JP S57118897A
Authority
JP
Japan
Prior art keywords
cylinder
hydraulic press
crown
tensile stress
circumferential part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP316081A
Other languages
Japanese (ja)
Other versions
JPS6150718B2 (en
Inventor
Naonobu Kanamaru
Akira Shoji
Takuzo Kurosawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KAWAMURA SEISAKUSHO KK
Hitachi Ltd
Original Assignee
KAWAMURA SEISAKUSHO KK
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KAWAMURA SEISAKUSHO KK, Hitachi Ltd filed Critical KAWAMURA SEISAKUSHO KK
Priority to JP316081A priority Critical patent/JPS57118897A/en
Publication of JPS57118897A publication Critical patent/JPS57118897A/en
Publication of JPS6150718B2 publication Critical patent/JPS6150718B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Abstract

PURPOSE:To make tensile stress acting upon a cylinder constituting a ram device in a hydraulic press zero and to make the hydraulic press light in weight and high in accuracy by mounting and fixing said cylinder to the bottom surface of a crown. CONSTITUTION:In a hydraulic press, a flange part 22A of a cylindrical cylinder 22 is fixed by means of screws 21, 21A, and a fast feed cylinder 10 is secured to the bottom surface of a crown 4, whereby a ram device 20 is formed. When pressurized oil P3 is supplied and pressure for working product is exerted, the internal pressure of a pressurizing chamber rises. At this time, the stress in a longitudinal direction does not act as tensile stress upon the cylinder 22 because a spacing exists between the inside circumferential part 22D at the bottom end of the cylinder 22 and the outside circumferential part 11A at the top end of a hollow piston 11. Hence, the wall thickness of the cylinder 22 is made thin and the top area of the crown is made small; therefore, the press device of a small size, a light weight and high accuracy is obtained.
JP316081A 1981-01-14 1981-01-14 Hydraulic press Granted JPS57118897A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP316081A JPS57118897A (en) 1981-01-14 1981-01-14 Hydraulic press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP316081A JPS57118897A (en) 1981-01-14 1981-01-14 Hydraulic press

Publications (2)

Publication Number Publication Date
JPS57118897A true JPS57118897A (en) 1982-07-23
JPS6150718B2 JPS6150718B2 (en) 1986-11-05

Family

ID=11549594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP316081A Granted JPS57118897A (en) 1981-01-14 1981-01-14 Hydraulic press

Country Status (1)

Country Link
JP (1) JPS57118897A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01273700A (en) * 1988-01-30 1989-11-01 Fried Krupp Gmbh Hydraulic type press
CN102380546A (en) * 2010-09-06 2012-03-21 刘家辉 Multifunctional press

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01273700A (en) * 1988-01-30 1989-11-01 Fried Krupp Gmbh Hydraulic type press
CN102380546A (en) * 2010-09-06 2012-03-21 刘家辉 Multifunctional press

Also Published As

Publication number Publication date
JPS6150718B2 (en) 1986-11-05

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